Ectopic pregnancy if I have tubal ligation is a rare entity.
Heterotopic pregnancy is a rare form of multiple gestation where an intrauterine pregnancy coexists with an ectopic one. The incidence of heterotopic pregnancy is 1 in every 10,000 to 50,000 spontaneous pregnancies. However, with the increased use of assisted reproductive technologies, such as in vitro fertilization (IVF) and embryo transfer, the incidence has increased to 0.5 - 1%.
Pregnancies that occur after an embryo transfer resulting from in vitro fertilization occur mainly in the interstitial area of the uterus or in the isthmus of the uterine tube.